Receives a Mail from JamesSpoolManager and takes care of delivery of the
message to local inboxes.
Available configurations are:
true: specify wether the user aliases should
be looked up or not. Default is false.
true: enable the forwarding. Default to
false.
LocalAdmins: specific users repository
name. Default to empty. If empty does lookup the default userRepository.

init()
A convenience method which can be overridden so that there's no
need to call super.init(config).

java.lang.String

processMail(MailAddress sender,
MailAddress recipient,
javax.mail.internet.MimeMessage message)
Return null when the mail should be GHOSTed, the username string when it
should be changed due to the ignoreUser configuration.

init

A convenience method which can be overridden so that there's no
need to call super.init(config).

Instead of overriding init(MailetConfig), simply override this
method and it will be called by GenericMailet.init(MailetConfig config).
The MailetConfig object can still be retrieved via getMailetConfig().